I was told that this is due to erratic watering. Someone else will tell you about the amount required. I water mine every day until it runs out at the bottom of the pot.

yes not enough water. are they in grow bags as this is more difficult to keep wet. if they are in pots in the ground or directly in the ground then they cant get overwatered as it drains away. water well in the evening and first thing ideally.

Many thanks, I haven’t been giving them eouugh.

Sorry, didn’t see your question. They’re in large pots

Sounds like blossom end rot which is due to a shortage of calcium. I broke a piece off a stick of ordinary chalk, crushed it finely and sprinkled it on the soil. Watered it in. end of problem! I was amazed how well it worked. Some people use crushed eggshells but crushing chalk is easier.

Thanks for that S, i’ll try that.